Ph.D. Candidate LAMDA Group, Nanjing University zhoudw(at)lamda.nju.edu.cn Short Biography. I received my B.Sc. degree from Hunan University in June 2018. In the same year, I was admitted to study for a M.Sc. degree in Nanjing University without entrance examination in the LAMDA Group, led by professor Zhi-Hua Zhou, under the supervision of Prof. De-Chuan Zhan.